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I am planning to upgrade my existing Cop Security 16 channel Inspire Blue DVR which alterEgo (thanks again alterEgo) helped me setup a little while back with something newer but I am thorn between different standards and find it hard to choose between HD-SDI and HD-TVI. I have been looking at Vectus G series HD-SDI and Hikvision / Dahua HD-TVI 8 channel DVR's and wonder what would be your recommendation. My existing cameras are not great so will need to replace these too (Vista, Genie and Ganz 600/700TVL). Looking at HD-DSI and HD-TVI camera prices it seems the HD-SDI are much more pricier and not many models available when compared to TVI's. Is there a reason for this as I understand the image quality is very similar, perhaps chipset price in HD-SDI? I already have good quality RG59 + power cabling in place so this should not be an issue when upgrading to the new system whatever it is. Any input on above DVR's and reasonably priced cameras would be greatly appreciated.
